Romanized by me.
Color coded done by me.
Please credit me if you take the lyrics.

Translations

Again, did I (did I) did I (did I) did I do something wrong?
You get mad so easily (mad) and get tired (tired)
Please know my heart

(Hey baby) I only have you- the only person who makes my heart beat
(You know baby) I only have you alone

Please let us just love, please let us stop fighting
Sometimes we doubt and argue but still (but still) but still I love you
I’m still young (still young) but would you trust you, till always (I only love you)
Please let us love, I will promise eternally

If I can’t get a hold of you for a second
I’m frustrated frustrated frustrated frustrated why? (why)
If you go to meet your friends
I’m nervous nervous nervous nervous why am I nervous?

(Hey baby) Don’t be afraid- because I’ve fallen for you
(You know baby) I only know you- I only have you

Please let us just love, please let us stop fighting
Sometimes we doubt and argue but still (but still) but still I love you
I’m still young (still young) but would you trust you, till always (I only love you)
Please let us love, I will promise eternally

We always tell each other to behave better
And we always fight like this
We get angry and tell each other that they did something wrong
But please help us not to fight yeah~

Please let us just love, please let us stop fighting
Sometimes we doubt and argue but still (but still) but still I love you
I’m still young (still young) but would you trust you, till always (I only love you)
Please let us love, I will promise eternally

Please let us just love, please let us stop fighting
Sometimes we doubt and argue but still (but still) but still I love you